This weekend has brought on the first real heat wave of the winter, which is a little earlier than we usually see this kind of heat. How long will it last?
At 156AM, ET, Jackson was reporting a temperature of 74 degrees with clear skies. The warm temperatures even at this late hour are a result of brisk southerly flow generated by a distended area of low pressure in the Dakotas. Temperatures tomorrow will respond in kind, with 90s highly likely.
The flow is generally from the southwest with this storm, so the airmass in lower Michigan remains relatively dry. With little by way of instability, it will take a trigger to touch off thunderstorms in Michigan, despite the heat. A warm front will be the primary focus for storms, with a derecho tearing through Minnesota and Wisconsin, headed towards northern Michigan tomorrow. A cold front will begin to drift south on Monday, but there will be no upper level support for cooler air to drive southward. Even more significantly for the threat of rain, disturbed weather in the eastern Gulf will mean that the southerly flow into the front will not be laden with moisture. Hot, dry weather is going to continue for at least the next two days.
Tomorrow – Mostly sunny, hot, High 87, Low 68
Monday – Mostly cloudy, High 91, Low 67
TWC: Tomorrow – Sunny skies High 88, Low 66
Monday – Generally sunny. Near record high temperatures. High 92, Low 69
AW: Tomorrow – Mostly sunny, breezy and very warm High 89, Low 66
Monday – Sunny, breezy and hot with the temperature approaching the record of 95 set in 1933 High 93, Low 68
NWS: Tomorrow – Sunny and hot, High 90, Low 66
Monday – Sunny and hot, High 92, Low 69
WB: Tomorrow – Sunny, High 88, Low 67
Monday – Sunny, High 92, Low 70
WN: Tomorrow – Mostly sunny, Higj 90, Low 70
Monday – Mostly sunny High 91. Low 68
FIO: Tomorrow – Clear throughout the day. High 91, Low 69
Monday – Clear throughout the day. High 92, Low 69
So, that heat is going to linger for a while. Satellite is showing a lot of sun in the center of the country. Well, moon, at this time of night. That cluster of storms in South Dakota will be a doozy later, but southern Michigan is going to be just fine.